package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.vo.AttrGroupWithAttrsVo;
import com.atguigu.gulimall.product.vo.SpuItemAttrGroupVo;

import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import org.springframework.util.StringUtils;

@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    AttrService attrService;
    @Autowired
    CategoryDao categoryDao;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        // IPage<AttrGroupEntity> page = this.page(new
        // Query<AttrGroupEntity>().getPage(params),
        // new QueryWrapper<AttrGroupEntity>());
        // setCatelogName(page);
        IPage<AttrGroupEntity> page = baseMapper.selectAttrGroupWithCatelogName(
                new Query<AttrGroupEntity>().getPage(params), new QueryWrapper<AttrGroupEntity>());
        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
        String key = (String) params.get("key");
        // select * from pms_attr_group where catelog_id=? and (attr_group_id=key or
        // attr_group_name like %key%)
        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>();
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((obj) -> {
                obj.eq("attr_group_id", key).or().like("attr_group_name", key);
            });
        }
        if (catelogId == 0) {
            // IPage<AttrGroupEntity> page = this.page(new
            // Query<AttrGroupEntity>().getPage(params), wrapper);
            // setCatelogName(page);
            IPage<AttrGroupEntity> page = baseMapper
                    .selectAttrGroupWithCatelogName(new Query<AttrGroupEntity>().getPage(params), wrapper);
            return new PageUtils(page);
        } else {
            // IPage<AttrGroupEntity> page = this.page(new
            // Query<AttrGroupEntity>().getPage(params), wrapper);
            // setCatelogName(page);
            IPage<AttrGroupEntity> page = baseMapper
                    .selectAttrGroupWithCatelogName(new Query<AttrGroupEntity>().getPage(params), wrapper);
            return new PageUtils(page);
        }

    }

    private void setCatelogName(IPage<AttrGroupEntity> page) {
        for (AttrGroupEntity item : page.getRecords()) {
            CategoryEntity categoryEntity = categoryDao.selectById(item.getCatelogId());
            if (categoryEntity != null) {
                item.setCatelogName(categoryEntity.getName());
            }
        }
    }

    /**
     * 根据分类id查出所有的分组以及这些组里面的属性
     * 
     * @param catelogId
     * @return
     */
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
        // com.atguigu.gulimall.product.vo
        // 1、查询分组信息
        List<AttrGroupEntity> attrGroupEntities = this
                .list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));

        // 2、查询所有属性
        List<AttrGroupWithAttrsVo> collect = attrGroupEntities.stream().map(group -> {
            AttrGroupWithAttrsVo attrsVo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(group, attrsVo);
            List<AttrEntity> attrs = attrService.getRelationAttr(attrsVo.getAttrGroupId());
            attrsVo.setAttrs(attrs);
            return attrsVo;
        }).collect(Collectors.toList());

        return collect;

    }
    @Override
    public List<SpuItemAttrGroupVo> getAttrGroupWithAttrsBySpuId(Long spuId, Long catalogId) {

        //1、查出当前spu对应的所有属性的分组信息以及当前分组下的所有属性对应的值
        AttrGroupDao baseMapper = this.getBaseMapper();
        List<SpuItemAttrGroupVo> vos = baseMapper.getAttrGroupWithAttrsBySpuId(spuId,catalogId);

        return vos;
    }
}